lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h

   1 //===-- RuntimeDyldELF.h - Run-time dynamic linker for MC-JIT ---*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // ELF support for MC-JIT runtime dynamic linker.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef LLVM_RUNTIME_DYLD_ELF_H
  15 #define LLVM_RUNTIME_DYLD_ELF_H
  16
  17 #include "RuntimeDyldImpl.h"
  18
  19 using namespace llvm;
  20
  21 namespace llvm {
  22
  23 namespace {
  24   // Helper for extensive error checking in debug builds.
  25   error_code Check(error_code Err) {
  26     if (Err) {
  27       report_fatal_error(Err.message());
  28     }
  29     return Err;
  30   }
  31 } // end anonymous namespace
  32
  33 class RuntimeDyldELF : public RuntimeDyldImpl {
  34   void resolveRelocation(const SectionEntry &Section,
  35                          uint64_t Offset,
  36                          uint64_t Value,
  37                          uint32_t Type,
  38                          int64_t Addend);
  39
  40   void resolveX86_64Relocation(const SectionEntry &Section,
  41                                uint64_t Offset,
  42                                uint64_t Value,
  43                                uint32_t Type,
  44                                int64_t Addend);
  45
  46   void resolveX86Relocation(const SectionEntry &Section,
  47                             uint64_t Offset,
  48                             uint32_t Value,
  49                             uint32_t Type,
  50                             int32_t Addend);
  51
  52   void resolveARMRelocation(const SectionEntry &Section,
  53                             uint64_t Offset,
  54                             uint32_t Value,
  55                             uint32_t Type,
  56                             int32_t Addend);
  57
  58   void resolveMIPSRelocation(const SectionEntry &Section,
  59                              uint64_t Offset,
  60                              uint32_t Value,
  61                              uint32_t Type,
  62                              int32_t Addend);
  63
  64   void resolvePPC64Relocation(const SectionEntry &Section,
  65                               uint64_t Offset,
  66                               uint64_t Value,
  67                               uint32_t Type,
  68                               int64_t Addend);
  69
  70
  71   unsigned getCommonSymbolAlignment(const SymbolRef &Sym);
  72
  73
  74   uint64_t findPPC64TOC() const;
  75   void findOPDEntrySection(ObjectImage &Obj,
  76                            ObjSectionToIDMap &LocalSections,
  77                            RelocationValueRef &Rel);
  78
  79 public:
  80   RuntimeDyldELF(RTDyldMemoryManager *mm) : RuntimeDyldImpl(mm) {}
  81
  82   virtual void resolveRelocation(const RelocationEntry &RE, uint64_t Value);
  83   virtual void processRelocationRef(unsigned SectionID,
  84                                     RelocationRef RelI,
  85                                     ObjectImage &Obj,
  86                                     ObjSectionToIDMap &ObjSectionToID,
  87                                     const SymbolTableMap &Symbols,
  88                                     StubMap &Stubs);
  89   virtual bool isCompatibleFormat(const ObjectBuffer *Buffer) const;
  90   virtual ObjectImage *createObjectImage(ObjectBuffer *InputBuffer);
  91   virtual ~RuntimeDyldELF();
  92 };
  93
  94 } // end namespace llvm
  95
  96 #endif